Bolster with lateral motion devices



March 8, 1932. T. H. sYMlNG-roN 1,848,282

JBOLS'IER WITH LATERAL `MOTION DEVICES Filed April- 9,. 1926 Y, Patented Marr 8,V 19312V @noms-H1 sYMmqmoN, 'on-Bnmgnwionn MARYLAND, AfssIGNoR,'BY'fmEsNn-:Asslolie ming mairie. smiime'iion AND son, me., onBnTmon-E, nmnnennnjconf fnons'nn; nemen. 195mm@ lheprincipa1-objecfnf,the .iiivcniicnc gcncrfclly Si11tcd.,jis.t0 provide'. 11. ccnibiiincicii'cf' tinck and body holsters- -cquippcd Wiihciclc! 'bearings .fici Swimming fhclcid @1.1.11 iiiihcl i 'nglateijeLmoJ cquipip'cd with means Pci-c1111 1 icil 0f .thc body bOlSicr 3W. truck side frames.

'rc'cpcct Atc che increase inthcizcghi .cciilinglipcn the inside rail and @tendency for the body to nioefnfv icci'dly Ywich ,1c/Spc@y ic .thc .firuckci Qn Siieighiiicck iiiskiicwn.- tliciicicei dcvcicps a. .idling tendency Whchmayrbe the izicsult. ci

unelvenness. in Vdie rails oiwhio'n ymay vguise'.

fromrcihcr cciiiccs- When the..figcliing2116.1V

Y synchionizesy .with the paosacelof Athe eliminatehe rolling tendency.

; wheciccvci thc .1.2111 icinis; asccciiimt. cci?- fain` speeds, a penduluni-llkeeotion isuset np and this is ofconrsevhighly dangerous on ao- Y cciiiii ci the'. possibility ci?derai1,1l.11 c1.1.i.V This?.

i s lp zntioularljz `true in' ca r construction fliege '1 the Weight,issusiainedbyihe oenterbearingts with Clearance, beivween the side begining ele-j y y Y u i Y and coasting.suriaeM mentsonthe tniiekand body holsters,L

ticwiiiilic above iectsin. .Yicwtlici haiic designedthe present invention Whioiillas for.` ailfiliporigntomeot the povisionfof InefagogsvV c :Occurrence .oil

acting A12.1.1..iiciiiciiccily 1111911. ih side, suiviev for. ere ating an upv,

added Strain thereonV and producing a nfsefnl fccc -iciiding ic' iight .i116 f .cer check. '0.1,'

, Anofheir object ofthe iI1,\r -;If13.i.0..Ilisforo pijo-y iiicic. 'c bcaice .cicuciiirc embodying, iclicicj ncimiciirig smi-inging moyeuiciii ,ci .ilicbcciy bolster.Wide,respe7 t' to-theitruok belgien in fliiicii chcfmceilc Lpc1111ifcifilg.ieicicl..iiiciicu of lie i1c1ccS.ihcSc fcaiuics ccceciafiingiic. ciiyic rcicici. c1'- :ciicck :cai rcll but @LSG .to provide i 'glceicif dccircblc-iiciibiliiy wider iifiiizcl.c011-Y difficilef meer obige, of @he imno@ is@ -.p..r. vid a Sidc bcarngf ciiciiuic-including-1a pookelilge. bearing-,member adapted to.' be' mciiniccli .the body bclcter..cicfcccncceiicii 19.16;, Sernin@ iccecf! Y types o1". shapes but allfzgrranged iowprovijd'e 1i is 111111111101111 that when afrcighi; @1.15. rounding @.ciilvcctiisuciisnccdc thcrc .To the acaiimiciiip .thc foregoing ccd. Oiiici cbiccs :and ecivciiicgccl -Silch 21S Y Will dienaiiomatie lifting action when side spinge hereinaffer appear', VJche Yinvention ccilcicis irichc.ccccirucic11,..arrangement and" ccmbiimiicncijpiiic tc be ,Hicx fully flecomp @ming .dra-wings. iii which.;

Figlirc l lis a vciiicel longitudinaliscciici' taken'. ccntcally hitweb c. bcdiybclcicr and the tinck bclcicicquippccl wichlthc' Side ceciingierrangcm 11.15 Y Figure 2 i,.a,.1c1i;if11lc1css sectional: ,vicW teken Q11A ihcjli11c22cf'gurcgl f Figure .3. iseirfig-mcniery View c11c.31f1.1gc1` Scale Showing fthe. .seme cilci ariane' 11t- .lliicimccdn F.,

ingSl,... the numeral' dccigiiefcs fa; .tinck .bel-w Sici 1i111ch.,;11.1.accciciincciwlch 1th@ present iiiicntcm is .iciiiicd iiccr cach .c1111. with .21.

provided the usual pin 8 surrounded by an upstanding fiange 9 which may be of somew iat elongated shape, for a purpose to be eX- lained, or which could, conceivably, be merey circular.

The pocket 2 is for the accommodation of the side bearing structure which includes a supporting member orbearing element 10 constituting a rest or seat for a preferably frusto-conical roller 11. The top surface of the member 10 is preferably inclined so as to conform to the inclination of the roller and the central portion of this top surface f may be recessed or sunk to define upstanding flanges 12 between which the roller is received. The side bearing structure further includes an upper support or bearing'element 13 which has its lower surface preferably inclined to correspond to the inclination or pitch of the roller, this under-surface being preferably sunk or recessed at its central portion to define flanges 14 located outwardly of the Lends of .the roller for maintaining the same in proper relation to the other parts.

The end portions of the members 13 depend therefrom and extend into the pocket, that is to say ythey are located inwardly of the upstanding walls which form the ends of the pocket.

It may be desirable to provide a bank or banks of plate or leaf springs 15 located beneath the bearing element or support 10, the

springs resting at their ends upon the bot-v tom of the pocket 2, this bottom being preferably concaved as indicated at 16 so as to permit the springs to yield downwardly under pressure. It is likewise preferable that the bottom surface 17 of the member 10 be convex so as to have the proper action upon the springs. Clearly, these springs may be omitted, if desired, in which event the pocket 2 may be made shallower.

The numeral 18 designates the body bolster which is provided at the center of its bottom with a center plate 19 located within the confines ofthe flange 9 but 'of less size than the space within the fiange so that the body bolster will'be capable of movement longitudinally ofthe truck bolster or laterally with respect to the side frames. The center plate 19 is represented as having a socket 20 accommodating the pin 8 but of greater diameter to permit play. Ordinarily, body bolsters of this type are equipped with bottom plates 18. c

Carried by each end portion of the body bolster and located therewithin is a pocket or bearing member 21 here shown as of hollow formation reinforced by webs 22 and provided vwith flanges or attaching portions 23 located beneath and underlapping the plates 18a and suitably secured to the horizontal flanges of the channel pressings 24 of which the body bolster is constructed, the

body bolster of course including the usual cover or top plate 25 which is likewise secured to the members 24.

The lateral motion mechanism includes a Aplurality of rollers 26 located between the bearing member 13 and the pocket or bearing member 21, it being obvious that a plurality of the rollers is preferable in that the strain thereon will be divided. Itis of course conceivable that the confronting faces of the members 13 and 21 engaged by the rollers may be of different shapes and in Figures 1 and 3 I have'disclosed these confronting surfaces as provided with cam-like curved areas 27 and 28 respectively of similar shape but oppositely arranged so thatwhen the body bolster moves laterally 'with respect to the truck bolster under the influence of side surge or sway the rollers coacting with the surfaces will act to restore the body bolster to its initial or neutral position subsequent to movement. Furthermore, it is clear that the coaction of the curved surfaces of the rollers will operate normally to maintain the parts in neutral position and oppose relative movement in either direction.. They thus perform the twofold function of acting as movement restraining means and recentering means. v

Instead of providing the simple arcuate surfaces disclosed in Figures 1 and 3 the members 13 and 21 may have their confronting. surfaces formed with projections 29 and 30 respectively adjacent which are curved areas 31 and 32 oppositely arranged and coacting with the rollers iu identically the same manner as above described.

As an alternative construction, the adjacent surfaces of the members 13 and 21 may be fiat or plane as indicated at 33 and 34 respeetively, in which event rollers 35 of elliptical form may be employed, as shown in Figure 5. It is likewise true that rollers 36 of still a different form may be used as shown in Figure 6, these rollers being of compound curved shape in eross'section. The rollers 35 and 36 might be more properly termed rockers on account of their shape and it is clear that they will yoperate as movement restrain-` ing means and also centering means after relative movementk of the bolsters in the same manner as the cylindrical rollers k26 coacting with the curved surfaces on the members 13 and 21. Itis also conceivable that other arrangements may be resorted to but the foregoingV should be sufficient toy give full disclosure of the principles involved.

Body and truck bolsters constructed, combined and arranged in the manner described and illustrated will possess the great advantage of reducing end'thrusts on the side frames and wear and strain on the brasses, journals and car wheels while,y furthermore, reducing train resistance on curves as the center line of a train of cars may be permitted to fall inside of the center line of the the second named bearing element, and means coacting with said lateral motion rollers normally maintaining the bolsters in neutral position. Y 5 l 10. The combination of a truck bolster having a pocket therein, a side bearing structure mounted within said pockets and including a lower bearing element, a bank of plate springs within the bottom of the pocket supf porting said bearing element resiliently, a roller mounted upon the top of said bearing element, a bearing element resting upon the roller and movable laterallyof the bolster, a body bolster, a bearing memberof pocketlikeformation fitting up within the body bolster, lateral motion rollers yarranged between the pocket-like bearing member and the second named bearing element, and means coacting with said lateral motion rollers normally maintaining the bolsters in neutral position and restoring the bolsters to neutralposition subsequent to relative movement. f

11. In combination, a truck bolster formed near each end with a pocket having end Walls prolonged upwardly beyond the top of the bolster, a body bolster, a bearing member mounted within the lower yportion of the body bolster, a side bearing assembly mounted within the pocket and including a roller enclosed therewithin, the side bearing assembly further including a bearing member rseated upon the roller and having portions located inwardly of said pocket walls,

' 35 and a plurality of rollers mounted upon said last named bearing member and located within the bearing member in the bolster.

12. In combination, a truck bolster formed near each end with a pocket having end walls 40 prolonged upwardly beyond the top of the bolster, a body bolster, a bearingA member mounted within the lower portion of the bod bolster, a side bearing assembly mounte within the pocket and includingv a roller enclosed therewithin, the side bearing assembly urther including a bearing `member seated upon the roller and having portions located inwardly of said pocket walls, a plurality of rollers mounted upon said last named bearing member and located within the bearing member in the bolster, and thrust means between the outer Vend of the first named roller and the outer wall of the pocket. In testimony whereof I aiix my signature.

55 THOMAS H. SYMINGTON. 

